I think he meant something along the lines of "People will always try to find a way to get high; burying safe drugs in red tape just pushes those thrill seekers to look for alternatives."

And I really don't think mcwillis' anecdote is representative of the bigger picture. Most of the people who play the choking game are just everyday kids who want to have a little fun. If cannabis were a viable alternative for them, I doubt very many would bother strangling themselves.